Al & Deb,
We're in the Bay Area and never seem to find the time to take a weekend to go to Tahoe. Your report gave me a little more motivation to get up there.
Just wanted to pass on a tip for the yellow-jackets, there's a trap called Rescue, that works great. I keep it in a zip-lock baggie in the RV. It uses an attractant (pheromone?) and the yellow-jackets climb right in and die pretty quick. I was hesitant at first, but it works really good. Hang it just up wind from where you are, they buzz right to it. It usually traps the first one within a few minutes. 20 or more the first day. Put it back in the baggie and dump when you get home.
Your neighbors will thank you for it, too!